diff --git a/crates/swc/tests/exec.rs b/crates/swc/tests/exec.rs
index 5c051dccd36..f9d06b8c7d5 100644
--- a/crates/swc/tests/exec.rs
+++ b/crates/swc/tests/exec.rs
@@ -204,5 +204,9 @@ fn stdout_of(code: &str) -> Result<String, Error> {
         )
     }
 
-    Ok(String::from_utf8_lossy(&actual_output.stdout).to_string())
+    let s = String::from_utf8_lossy(&actual_output.stdout).to_string();
+    if s.trim().is_empty() {
+        bail!("empty stdout");
+    }
+    Ok(s)
 }
diff --git a/crates/swc/tests/exec/.issue-2624/exec.js b/crates/swc/tests/exec/.issue-2624/exec.js
new file mode 100644
index 00000000000..c4bc23f69a6
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-2624/exec.js
@@ -0,0 +1,9 @@
+async function runCounters() {
+    for (const idebug of [1, 2, 3]) {
+        setTimeout(() => console.log(`idebug = ${idebug}`), 100);
+    }
+}
+
+
+runCounters()
+runCounters()
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-2834/exec.js b/crates/swc/tests/exec/.issue-2834/exec.js
new file mode 100644
index 00000000000..732dff968f1
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-2834/exec.js
@@ -0,0 +1,8 @@
+
+var b;
+var d;
+var p;
+
+[(b)] = [3]; //  correct 
+({ p: (d) } = {}); //  correct 
+[(parseInt.prop)] = [3]; //  correct
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-2865/exec.js b/crates/swc/tests/exec/.issue-2865/exec.js
new file mode 100644
index 00000000000..acf0ee08974
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-2865/exec.js
@@ -0,0 +1,6 @@
+Object.prototype.getTypeof = function () {
+    return typeof this;
+}
+
+console.log(Symbol().getTypeof())
+console.log(typeof Symbol())
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-2948/exec.js b/crates/swc/tests/exec/.issue-2948/exec.js
new file mode 100644
index 00000000000..969000ac7a7
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-2948/exec.js
@@ -0,0 +1 @@
+"\u{Dc00}" // Invalid unicode code point
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-3006/exec.js b/crates/swc/tests/exec/.issue-3006/exec.js
new file mode 100644
index 00000000000..9fe1184e7e6
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-3006/exec.js
@@ -0,0 +1,6 @@
+async function a() {
+    for (const number_in_a_sequence of Array.from(new Array(7), (_, i) => i)) {
+        setTimeout(() => console.log(number_in_a_sequence), 10)
+    }
+}
+a()
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-3660/exec.ts b/crates/swc/tests/exec/.issue-3660/exec.ts
new file mode 100644
index 00000000000..303703d0e2c
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-3660/exec.ts
@@ -0,0 +1,39 @@
+// Adding a type to Set breaks the
+
+const { Test } = require("mocha");
+
+// variable on the next line
+function Test1({
+    var1 = new Set<number>(),
+    var2 = "123", // <- this variable is renamed to `var21`
+    var3 = "456"
+}) {
+    console.log(var1, var2, var3); // <- here `var2` is used
+}
+
+// Placing the Set on the last line works
+function Test2({
+    var2 = "123",
+    var3 = "456",
+    var1 = new Set<number>()
+}) {
+    console.log(var1, var2, var3);
+}
+
+// Removing the type from Set also works
+function Test3({
+    var1 = new Set(),
+    var2 = "123",
+    var3 = "456"
+}) {
+    console.log(var1, var2, var3);
+}
+
+Test1({})
+Test1({})
+
+Test2({})
+Test2({})
+
+Test3({})
+Test3({})
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-3700/exec.js b/crates/swc/tests/exec/.issue-3700/exec.js
new file mode 100644
index 00000000000..c0732885ca3
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-3700/exec.js
@@ -0,0 +1,6 @@
+class A {
+    #a = 123n
+    foo() {
+        this.#a++
+    }
+}
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-3965/.swcrc b/crates/swc/tests/exec/.issue-3965/.swcrc
new file mode 100644
index 00000000000..d2793f0edaf
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-3965/.swcrc
@@ -0,0 +1,28 @@
+{
+    "jsc": {
+        "parser": {
+            "syntax": "ecmascript",
+            "jsx": false,
+            "dynamicImport": false,
+            "privateMethod": false,
+            "functionBind": false,
+            "exportDefaultFrom": false,
+            "exportNamespaceFrom": false,
+            "decorators": false,
+            "decoratorsBeforeExport": false,
+            "topLevelAwait": false,
+            "importMeta": false
+        },
+        "transform": null,
+        "target": "es5",
+        "loose": false,
+        "externalHelpers": false
+    },
+    "module": {
+        "type": "commonjs",
+        "strict": false,
+        "strictMode": false,
+        "lazy": false,
+        "noInterop": false
+    }
+}
\ No newline at end of file
diff --git a/crates/swc/tests/exec/.issue-3965/exec.js b/crates/swc/tests/exec/.issue-3965/exec.js
new file mode 100644
index 00000000000..3162a5c6676
--- /dev/null
+++ b/crates/swc/tests/exec/.issue-3965/exec.js
@@ -0,0 +1,11 @@
+const store = {
+    address: '101 Main Street',
+    what: function () {
+        return this.address
+    },
+    arrow: () => {
+        return this.address
+    }
+}
+console.log(store.what())       // '101 Main Street'
+console.log(store.arrow())      // undefined
\ No newline at end of file